Faston 0.250" tab header, solder termination
The 521384-2 is a male Faston quick-disconnect header with two 0.250" (6.35mm) tabs, 0.032" (0.81mm) thick, in a black fully insulated housing. Through-hole right-angle mounting and solder termination suit it for permanent board attachment where a field-replaceable tab connection is needed.
Tab width and thickness vs crimp peers
The 0.250" tab width and 0.032" thickness match the mating female receptacles in the Utilux series, such as 1-1627194-0 (0.250" width, 0.032" thickness, crimp termination, 15-18 AWG) and 1-1659250-0 (0.248" width, 0.031" thickness, crimp, 17-20 AWG). The 521384-2 is a solder-through-hole header; the Utilux peers are crimp receptacles for wire harnesses — the tab dimensions align, but the termination method and gender differ.